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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 676 · 40 questions
TalentJR

Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.

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  1. 1.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) grey-red-black (b) red-violet-black (c) violet-red-black (d) violet-red-brown
  7. 7.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) orange-black-orange (c) orange-black-brown (d) yellow-orange-red
  12. 12.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-yellow (b) violet-orange-orange (c) orange-violet-red (d) orange-violet-orange
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-brown (b) yellow-red-black (c) red-yellow-black (d) orange-yellow-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) brown-white-black (b) white-white-black (c) white-black-black (d) white-white-brown
  18. 18.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-orange (b) yellow-green-orange (c) yellow-yellow-yellow (d) yellow-yellow-red
  21. 21.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does red stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) grey-orange-brown (b) orange-grey-black (c) orange-grey-brown (d) orange-grey-red
  26. 26.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) orange-violet-orange (c) violet-orange-orange (d) violet-orange-red
  28. 28.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does grey stand for?
  36. 36.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-brown (b) violet-red-red (c) red-violet-red (d) red-violet-orange
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-black (b) green-blue-brown (c) blue-green-brown (d) green-blue-red
  39. 39.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?

Answer key

  1. 3
  2. 60
  3. the one nearest an end
  4. 5 %
  5. 7
  6. violet-red-black
  7. 710
  8. 3.9
  9. 1
  10. 2.8
  11. orange-black-red
  12. 72
  13. 540
  14. orange-violet-orange
  15. 4
  16. red-yellow-black
  17. white-white-black
  18. 87
  19. 510
  20. yellow-yellow-orange
  21. 7
  22. 25
  23. 1.6
  24. 2
  25. orange-grey-brown
  26. 6.3
  27. violet-orange-orange
  28. 740
  29. 920
  30. 4.1
  31. 60
  32. 11000
  33. 1
  34. 500
  35. 8
  36. 840
  37. red-violet-red
  38. green-blue-brown
  39. 84
  40. 20

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